Bug 2498118 (CVE-2026-59725) - CVE-2026-59725 socket.io: engine.io: Socket.IO: Denial of Service via invalid binary POST requests
Summary: CVE-2026-59725 socket.io: engine.io: Socket.IO: Denial of Service via invalid...
Keywords:
Status: NEW
Alias: CVE-2026-59725
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-08 16:01 UTC by OSIDB Bzimport
Modified: 2026-07-10 10:16 UTC (History)
1 user (show)

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Description OSIDB Bzimport 2026-07-08 16:01:45 UTC 
Socket.IO enables bidirectional and low-latency communication for every platform. From 4.1.0 before 6.6.7, Engine.IO protocol v4 polling transport does not properly close the HTTP response for invalid binary POST requests with Content-Type: application/octet-stream, allowing an unauthenticated attacker to exhaust server-side connections and sockets. This issue is fixed in version 6.6.7.
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